:root {
  --primary-color: #1a1a1a;
  --secondary-color: #4a4a4a;
  --accent-color: #2563eb;
  --background-color: #fafafa;
  --surface-color: #ffffff;
  --border-color: #e5e5e5;
  --text-primary: #1a1a1a;
  --text-secondary: #6b7280;
  --success-color: #059669;
  --warning-color: #d97706;
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 800px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-color);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.main-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.story {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.story-paragraph {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.story-paragraph:last-child {
  margin-bottom: 0;
}

.definition {
  background-color: var(--surface-color);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--accent-color);
  box-shadow: var(--shadow);
}

.benefits-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0;
}

.benefits-list li {
  font-size: 1.125rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-sm);
}

.call-to-action {
  background-color: var(--surface-color);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.cta-bullets {
  margin-bottom: var(--spacing-xl);
}

.cta-text {
  font-size: 1.125rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
  font-weight: 500;
}

.cta-text:last-child {
  margin-bottom: 0;
}

.form-container {
  max-width: 500px;
  margin: 0 auto;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1rem;
}

.form-input {
  padding: var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.2s ease;
  background-color: var(--surface-color);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.checkbox-group {
  flex-direction: row;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  cursor: pointer;
  line-height: 1.5;
}

.form-checkbox {
  margin-top: 2px;
  width: 18px;
  height: 18px;
  accent-color: var(--accent-color);
}

.checkbox-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex: 1;
}

.submit-button {
  background-color: var(--accent-color);
  color: white;
  border: none;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.125rem;
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  text-transform: none;
  letter-spacing: 0.025em;
}

.submit-button:hover {
  background-color: #1d4ed8;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.submit-button:active {
  transform: translateY(0);
}

.footer {
  text-align: center;
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.footer-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: var(--spacing-md);
  }
  
  .main-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
  }
  
  .story-paragraph {
    font-size: 1rem;
  }
  
  .cta-text {
    font-size: 1rem;
  }
  
  .call-to-action {
    padding: var(--spacing-lg);
  }
  
  .content {
    gap: var(--spacing-xl);
  }
  
  .benefits-list li {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: var(--spacing-sm);
  }
  
  .main-title {
    font-size: 1.75rem;
  }
  
  .call-to-action {
    padding: var(--spacing-md);
  }
  
  .form-input,
  .submit-button {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* Form Animation */
.newsletter-form {
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Success state for form submission */
.sendfox-form.success {
  background-color: #f0fdf4;
  border-color: var(--success-color);
}

.sendfox-form.success .submit-button {
  background-color: var(--success-color);
}

/* Loading state */
.submit-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}